Spinel CoMn2O4 nanoparticles supported on a nitrogen and phosphorus dual doped graphene aerogel as efficient electrocatalysts for the oxygen reduction reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (99) ◽  
pp. 96436-96444 ◽  
Author(s):  
Wenhui Guo ◽  
Xiuxiu Ma ◽  
Xianlei Zhang ◽  
Yaqing Zhang ◽  
Dingling Yu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Graphene Aerogel ◽  
Nitrogen And Phosphorus ◽  
Good Tolerance ◽  
Doped Graphene ◽  
Orr Activity ◽  
Novel Strategy ◽  
Excellent Stability

A novel strategy was developed for the preparation of a robust spinel CoMn2O4 nanoparticles supported on N, P-codoped GA catalyst with superior ORR activity, excellent stability and good tolerance of methanol crossover.

Three-dimensional N,B-doped graphene aerogel as a synergistically enhanced metal-free catalyst for the oxygen reduction reaction

2015 ◽  
Vol 17 (38) ◽  
pp. 25440-25448 ◽  
Author(s):  
Congcong Xu ◽  
Yan Su ◽  
Dajun Liu ◽  
Xingquan He
Keyword(s):  
Oxygen Reduction Reaction ◽  
Hydrothermal Reaction ◽  
Three Dimensional ◽  
Reduction Reaction ◽  
Graphene Aerogel ◽  
Good Tolerance ◽  
Metal Free ◽  
Doped Graphene ◽  
Orr Activity ◽  
Excellent Stability

A novel two-step strategy including a hydrothermal reaction and pyrolysis procedure was developed for the preparation of a robust N,B-codoped GA catalyst with superior ORR activity, good tolerance of methanol crossover and excellent stability.

Boron and phosphorous-doped graphene as a metal-free electrocatalyst for the oxygen reduction reaction in alkaline medium

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53637-53643 ◽  
Author(s):  
Gayoung Jo ◽  
Jakkid Sanetuntikul ◽  
Sangaraju Shanmugam
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Electrolyte ◽  
Metal Free ◽  
Reduction Activity ◽  
Boron Doped ◽  
Doped Graphene ◽  
Single Precursor ◽  
Excellent Stability

Phosphorous and boron-doped graphene, prepared using a single precursor, showed reasonable oxygen reduction activity and excellent stability in alkaline electrolyte.

Catalytic Activity of Silver Metal Supported on Doped Graphene in Alkaline Medium for Oxygen Reduction Reaction

2019 ◽  
Vol 1155 ◽  
pp. 55-69
Author(s):  
Nabila A. Karim ◽  
Nor Shahirah Shamsul ◽  
Siti Kartom Kamarudin
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Adsorption Energy ◽  
Reduction Reaction ◽  
Pt Catalyst ◽  
Nitrogen And Phosphorus ◽  
Doped Graphene ◽  
Phosphorus Doped ◽  
Silver Metal

The platinum (Pt) degradation, poisoning and carbon corrosion in acidic fuel cell has led to explore the research in alkaline fuel cell. However, the high cost of Pt has brought a lot of studies to find replacement for Pt catalyst. Due to that, silver metal is selected as non-Pt catalyst and supported by the nitrogen and phosphorus-doped on graphene for oxygen reduction reaction in alkaline medium. The adsorption energy and mechanism of the oxygen reduction reaction is studied by using density functional theory (DFT) calculation. The support catalyst of graphene is doped with three atom nitrogen and phosphorus namely as N3 and P3, respectively. The Ag supported on N3 and P3 are tested on O2, OOH, O and OH species. There are two types adsorption of O2 on N3 and P3 which is side and end-on adsorption configuration. The N3-Ag has similar adsorption energy for both configurations, but P3-Ag has low adsorption energy by end-on adsorption configuration. The effect of doped atoms on graphene also have been tested on O2, OOH, O and OH species. The result shows that increasing nitrogen doping atom has decreased the adsorption energy of O2 and vice versa on phosphorus atoms. A single phosphorus doping atom on graphene has shown the lowest adsorption energy, but the end-on configuration of P3-Ag has shown most stable adsorption. The schematic free energy profile shows that both N3-Ag and P3-Ag have high possibilities to be followed in oxygen reduction reaction mechanism but P3-Ag has advantage due to stable adsorption as non-Pt catalyst. The Ag metal supported on nitrogen and phosphorus-doped graphene show promising result to be a catalyst in alkaline fuel cell.

Boron, nitrogen, and phosphorous ternary doped graphene aerogel with hierarchically porous structures as highly efficient electrocatalysts for oxygen reduction reaction

2016 ◽  
Vol 40 (7) ◽  
pp. 6022-6029 ◽  
Author(s):  
Hualin Lin ◽  
Lei Chu ◽  
Xinjing Wang ◽  
Zhaoquan Yao ◽  
Fan Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Porous Structures ◽  
Graphene Aerogel ◽  
Hierarchically Porous ◽  
Graphene Aerogels ◽  
Highly Efficient ◽  
Doped Graphene ◽  
Boron Nitrogen

Highly efficient catalysts (mainly 4e− mechanism, Jk: −4.6 mA cm−2) for ORR based on B/N/P ternary-doped graphene aerogels were developed.

Facile synthesis of N-doped graphene supported porous cobalt molybdenum oxynitride nanodendrites for the oxygen reduction reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 1205-1216 ◽  
Author(s):  
Kamaldeep Sharma ◽  
David Hui ◽  
Nam Hoon Kim ◽  
Joong Hee Lee
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Electrochemical Stability ◽  
Facile Synthesis ◽  
Doped Graphene ◽  
Orr Activity

Herein, the porous Co–Mo-ON/NG alloy nanodendrites offer comparable ORR activity, superior electrochemical stability, long term durability for 2000 cycles with almost zero degradation and greater resistance to methanol compared to commercial Pt/C catalysts both in acidic and basic media.

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